Inductor having a cross-sectional area
Suppose you wish to make a solenoid whose self-inductance is 1.0 mH. The inductor is to have a cross-sectional area of 1.80 x 10-3 m2 and a length of 0.053 m. How many turns of wire are needed?
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Consider a rocket engine that burns hydrogen and oxygen. The combustion chamber temperature and pressure are 3800 K and 1.5 MPa respectively, the velocity in the combustion chamber being very low.
To determine the health benefits of walking, researchers conduct a study in which they compare the cholesterol levels of women who walk at least 10 miles per week to those of women who do not exercise at all.
A hair dryer is basically a duct of constant diameter in which a few layers of electric resistors are placed. A small fan pulls the air in and forces it through the resistors where it is heated.
"The Poisson distribution can be a reasonable approximation of the binomial distribution." Explain why this may/may not be true.
A ball of mass 0.208 kg has a velocity of 1.41 i m/s; a ball of mass 0.305 kg has a velocity of -0.409 i m/s.They meet in a head-on elastic collision. (a) Find their velocities after the collision.
The 0.78 kg bob of a pendulum is fired from rest at position A by a spring which has a stiffness of k = 1.62 kN/m. The spring is initially compressed 125mm.
A 3000-lb car accelerates under constant power from 60 mile/h to 90 mile/h on a 0.25 mile straight, level test track. Determine the horsepower that is delivered to the drive wheel.
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